Pamphlet-stitching machine.



A, A. STURTEVANT PAMPHLET STITCHNG MACENE.

PPLIGATIOE FILED HAY 29, 1902.

t W, H. HONISS.

NG MAGHNE.

um) MAY 29,1902.

. A STURTEVANT PAMPHLET STTGH AEPLICATMN I Patented (ist, 2G. 1914.

use.

APPLICATION FILED MAY 29, lJOZl A. A. STURTBVANT W, E. ff

APPLICATION PILES; AY

MGH

PPLICATION LED HAY Z9, 1902.

- Patented @et 2Q, i914,

l() SHEETS-SHEET 7.

. STUTBVMYT E. HONISS.

FAME-LET sTITCm-m MACHINE,

Patented Gat. 20, 1914 10 SHEETS-SHEET 1D.

-tekennu i thread-in afloop baelrwardly through the l2e en end View showing the position eifthe lmotter hook after sheding the prelinir ,nary loop upon Vanal around .the needle. ige. 3l, 3 3 and 35 shoe' the positions of the knetter hook when turned,` ook from the osition of Fig. 9.7' to that of Fig. 22, While lgs. 32,34 'and 36 are enel Views showing the relative positions, .the corresponding tunes, of the needle and the shuttle.-

Fig. 37 shows the Weavers knot at a period in .its development immediately succeeding that shown in Fig. 23, the loop in the upper or -needle thread being not yet fully contracted upon `the lower or shuttle thread, which was passed through that loop 'by carrying the loop around the shuttle. Fig. 38 shows the completed knot, the needle thread being so ne t draw lthe lower or shuttle preliminary loo et the needle thread, in which position the knotis tightened and :issumes the forni characteristic or the Weav- Fig. 39 is a perspective View,

showingl the conversion or" the Ramplilet -roni a li/shape into a fiat forni.

It is desirable to preface the detailed description oi"v the mechanism-i by a brief (lescript-ion of the principal functions ofthe Vmecliine. The circulars or pamphlets, the

leaves vof which are to lie sewn together are fed throufrli the machine at a uniform rate oi' speecl y ineens oi 'rot-ating .feed rolls,

' While 'the stitches inode along the central longitudinal fold line of' the pamphlets, which are preferably folded to the desired .line before being' passed through the inachine.. The pamphlets :ire placed upon a lli-shaped table or saddle, the apex ot' Whicli'locates and guides the fold line of the pamphlet in line with the needle. The penihlets are carried along the V-shaped saddle y ineens of a correspondingly snarled pair fof feed rolls whichV are relatively narrow and engage with the pamphlet on both sides of the fold line and elosely adjacei'it thereto. As' each pampliletis fed forward bythe rolls the leeres are pettorali-nl and sewn toetier o e. neetllc mounted in a swin fino' 4 t) head, which moves the needle forward in with the. work while engaging therein.' il. double thi-eetl is employed for sewing* vthe leaves together, the upper tlirearl being;

carried by the neeclle, while the lower thread registering employed for regulating 'cated snol alinecl with the he the feeding of the pamphlets into the ma- .merging thence into a flat horizontal table',

which, in conjunction with a pair of cylindrical feeding` rolls, flattens outJ the. pam,- phlets lto facilitate access of the cutting blades-to the connecting threads of the painu phlets, especially te the under thread. The time of operation of the cutting-ol device is controlled oy means of a feel'er which rests upon the pamphlets and by dropping into intervals between "succeeding pamphlets the sional 'for the operation of the thread cutting mechanism, The separated pamphlets are then dellvereci from the machine into 'any suitable box ortray 'orconveyer.

rthe mechanism is mounted. upon the bed 5 supportedl by the legs 6 and 7, the former of which separates towarclthe 'oase in the approximate outline of the letter A, and is provided With tivo Widelyseparatecl feet 2 and 3, While the leg 7 converges' toward its base like the leter il', and terminates "in o. single foot 4, the two legs thus form-in(1r a supporting base 'having three feet, which always rest firmly upon the floor, and thus support the machine against vibration (Fim 5). liurtherniore this V-shaped forni oli the leg 7 makes access to this portion of the mai chine easier by not interfering with the knees or feet et the operatorfmlio sits or stands at this end of the machine.

For convenience of: manufacture andassenibling, vthe machine is structurally fli-' vided into two sections,an`upper and a lower, the upper section comprising the mechanism which Works "shove the pani phlcts, While the lower ,section comprises the mechanism vwhich works on the lower' side of the pamphlets, the latter mechanism being mounted inl the eetl o, while the mec-'lb :mism oi' the upper section s mounted in ,thel oearl 8. For convenience, in constructing end assembling that head is made detachable from the bed in its entirety :ilongtlie joint line desiimatefl bv' the numeral 9 1., 3, 4l. and G., the head being; reteraloly la a. tongue and groove; construction Si1 in IFixx. 3.

is olE lxox lil-:econstruction,

The lieail 8 he heel; emi on the under sitlc,.tlie

open at t in Figs.

by means of 'ne i with the gear 48 of the train of'gearing' which drives the three sets of feed rolls 4at uniforin 'and vproperly correlated speed `(Fi 9).

T e lower roll of the second pair of feed rolls is mounted upon the shaft 31, the' ends of which lare journaled in the hed as shown in F ig. 8, and has lined upon its right ferent thicknesses of Work ybetween them.' .25

hand end a gear 32, which meshes with the gear 5() of the feed rol-l driving train (Fig. 9). As previously described, this roll 30 is so located that its upper peripheralsurface substantially coincides with the upper surfaces of the plates 14 and 15, by preference projecting slightly above the latter plate, as shown in Fig. 2.

The upperfeed rolls 18 and 85, which coperate with the rolls 19 and 30, respectively, are also positively driven from the train of driving gearing shown in F ig. 9; and these rolls are mounted so that they are movable toA and from their respective coperating rolls 1 9 and 30 to allow for feeding dif The roll 18 and its attached or integral driving gear 110 `are mounted to rotate upon the stud 41, fixed in the arm 12, which is mounted to oscillate upon the ends of the bushing 43, supportednnd clamped at its center in the bracket 414. The roll 85 is mounted to -rotate upon the stud 36, the end of which is secured in the arzn 37, which ismunnted to 'oscillate on the inside of the bushing 113; and this portion .of the arm 37 serves as a hearing forthe rotating driving shaft 4,5, the left hand end of which is provided with the gear l1G, which meshes with and drives the gears 38 and 40 of the upper rolls 18 and 35 respectively. inasmuch asthe driving gear is thus' located concentrically vvitlrthe axis of oscillation of theY arms 37 and 4:2,

, which carry thosev upper rolls, it is evident that the latter Will remain in positive driving engagement vWith the orear 35 in spite of the differing thicknesses of the pamphlets. The gears 10 and 16 are preferably pro- .tccted hy means of a guard 417, carried by the'arm .37. 'llieV roll 18 and its gear are fitted so as to have 'a limited amount of end; wise movement upon the stud 41, so asto allow the roll lto adjust itself While running tothe angular saddle 'plates 11, the collar 39 being used to keep the rollfrom coming i ofi 'the stud. Thefdriving shaft 115" is jour- #i naled at its right hand end inl the head- 8,

and that 'end of the shaft is provided with 'a gear @gearing with the train' shown inv Fig. 9. That train lof gearing is driven' by means ofv the pinion on the shaft 51,- which is journaled at its ends inl 'bearings `in the hea'd'S.- The' right hand-end of'this ,shaft proie'cts heyond the boxlike casing of l:the head/ and has fixed upon it the driving gear 52. which meshes with' a :gear 53 on the cani shaft 55: That cani shaft is *journaled 15u/aces inthe boli-like vertical portionK of the head v8, and has fixed upon it within the box, the

The delivery mns 176 and 177 which-cm1- I stitute the vthird pair of driving rolls for feeding the pamphlets through the machine are herein shown to be driven by the endless belts 178 and 179 from the second pair of driving rolls 30 and 35 respectively (Figs. 5 and 11). These-rolls are preferably'reduced in diameter as best shown in Fig.l 11, at'the portions which receive the belt, so that vthe outer surfaces of the belt are practically coincident with theA circumference' of the rolls, so as to maintain the linear speed of the pamphlets at approximately the same rate throughout the machine.

'F or some classes of work it Amay be desu'- able to drive the rolls 17 6 and 177 positively,

which may be done by means of gearing in any well-lrnown way, by 'a train of gearing from the gears -32 and 38, respectively.A

When driven as herein shown by belts or tapes provision should be made for the stretching incident to their continued use. To this end the rolls are herein shown to be mounted upon the swinging crank arms 181 and 182, in which are mounted the studs 183- and 1851., upon which the rolls rotate. The outer ends of these crank arms are .provided with springs 185 and 186, connected .to any convenient support, the tension of the springs serving to keep the rolls 17 6 and 17 7 tightly drawn to the left, as viewed in Fig.-

11, s o as `toflreeg the belts in proper driving tension. accommodate themselves to the varying thicknesses of the pamphlets, one .of them,"

preferably the upperroll' 176, with its crank arm 181, is mounted upon a swinging arm .188, which is pivotally-rnounted u on the stud 189,-to 'the frame of the mach-lne, the opposite end of the arm being provided with the pivot .stud 190, for thecranlrjarrn 181. An ladjusting screw 193 is preferably. used to supportthearin 183.` The-corresponding pivot stud for the crank arm 182'is secured in the bracket 199', or in' any other convenlent portion of the frame.

As a means for-'supporting Aand guiding the pamphlet While being delivered from the relis 176 and 177 We preferablyemploy a delivery rod or Aplate 195, secured to an arm 196 adjustably clamped upon the stud 184e,

around which the delivery plate may be adico In order 'to enable these rolls to,-

Suited :am in The guideor presser 'loot 95 is secured in vvany convenient way, as shown in Fig. 11, te'

the lower end of the swinging head 80,. loeing' preferably made adjustable on the head to suit the diierent thicknesses of pamphlets to be sewn. rThis guide or presser foot serves' to guide the thread and also serves to keep the pamphlet from rising while the upper thread is being drawn tight to coniplete the knot. l In some cases it is desirable to mountthis` presser foot so as to have a resilient downward pressure upon the work, as in the ordinary sewing machine, not only to allow for the diiiering thicknesses' or' the Work, but to compensate for the change inV level due 'to the swinging movementoi its lower end, particularly when the timing of the mechanism requires the knot to he drawn tight when this presser foot is not at the middle or lowest position of its swing, shown in Fig. 11.

n lorder to oscill'ate the head SG so as to carry the needle along with the Work at the same rate of travel when the needle is in the work, and to return the needle to its first position for penetrating tloeiworlr 'et the right pointsl for the succeeding stitches, the. sleeve 83 is provided at its right hand end with a oamarm 96 (Fi ds. e and 6) which engages with the cam 9 on the cam shaft 55, that cam being so shaped as to impart the required 'swinging movement to the head, the cani Dat-h being' laid out with particular accuracy ii'or that portion of its operation which. keeps the needle in register with the Work While engaged therein, and :is the latter is fed forward by the feed rolls. The cam shaft 55', as above noted, is. geared tomale one rotation for eachrotation of theinnin sha'i't 60, the parts being so adjusted as .to insure aproper time relation lietween. the crank pin S8 and the cani 97, so tliatstlie head is'swung bacliwardly to carry 'the needle with the pamphlet when the crank pin drives the needle into the Work.,

and ,is swung forward again a'fter the cranl pin has carried the-needle out ci the Work. The' czoncentric relation of the swinging head and main shaft 60 ene-bles this related movement to lie established with es great accuracy and certainty as though the needle bar head were stationary, and the work were advanced by step by step movement as in the customary arrangement of the Jfeed of a sewing;V machine.

Any desired form of shuttle mechanism may be employed for carrying the'lower or shuttle thread, and passing); it through the loop which is formed in the needle thread at the bottom of the stroke of the needle. The rotar f shuttle herein employed consists of nueces a flat substantially circular dislriGG, which is cut away ,to i'orni a beek 101 for entering the loop in the needle thread, when the needle starts liaek from its lowest position, A

as shown in Fig. 11. The shuttle disk is supported at its peripheral 'edge in a. circiunierential groove in the shuttle bracket 102, from 'whieh'itI may be readily removed by removing the 'ring 103, thread is preferably Wound in the form of e cylindrical cop which rests in e. ree

The 'shuttle tangular opening, substantially in the een 'l ter of the shuttle-disk 100, being mounted upon a pin '10G which is hinged at one end to the shuttle disk 100, as shown in. Fig. il,

til'

so that it may readily be 'swung into and out of place'to put on a new cop.` 'As the,

heal; of the shuttle enters the needlethread'1 loop at the pition 'shown in Figs, ll and it opens the loop which paseesupon the opposite sides of the shuttle disk, as shown' in Figs 34 and 35, so that the loop is oarried entirely around that shuttle disk, and

therefore around the cop contained in tlief "insertion of a new cop,A the end of the 'plate *forming a catch orlatcliing' it to the shuttle disk. This front 'guard piste' is also .lesk

preferably provided 'with a guide aperture 108 through which the shuttle Athread is passed from the-cop, and-this aperture. is, v

preferably located substantially coincident l with the airis of rotation of the shuttle, so

as to d-raiv more uniformly from the cop.l A suitable, tension device is also provided on the shuttle, for controlling the tension ,of

the shuttle thread. v

The shuttle disk i0() is rotated in itsbea'rings in suitable timerelation with .the'vmove ments oi' the needle and the lmotting' devicesfheingg driven' hy means of the shaft 11.2, journaled in thebed 5 (-Fig; 6). 'The left hand end of the shaft H2 carries the shuttle driver which consists of a. carrier 113 upon'ivhich is pivoted the carrie-r erm. 11.4. This arm is provided near its op'po site ends with earn-pins or rollers ilo, which engage with the .cam 'll which. is a. iixed, com arranged conccntrieally 'with the shaft 1.12, and preferably forms the hearing for that shaft, asA herein shown, being clamped in the cross rib lliof the bed, so that vit may he adjusted therein in proper ime and relation to the carrier arm, to which it iinparts an oscillatory movement ns the carrier L'ythese wf@ A @.18 Ell 1i. n* E @wml the @am @am XY.. i .11.10

.isheet ben'df 0n account of .the wellknown 'seurit of this .knot it Iis here adopted for t e present purpose, and is tied in' thefollowing manner, and by means,

of mechanism which will .now .be described, operating vin conjunction with the needle and the shuttle. There are various existing bringing with it a portion of' the shuttley methods of formingthis kn'ot, but the one herein shown isI believed to be novel and .best adapted to operate in conjunction 'withf -the ordinaryl lock-stitch forming mechanism. This method and tle instrumentali- 'ties for forming it are illustrated in Figs. 22 to 38, inclusive.

Figs.;1 87 and 38 ywhich are drawn on enlarged scale, show the knot itself at two rincip'al stages of its formation A lpreliminary loo 141 is irstlformed in the needle -threa 140, and an adjacent portion of the same' thread is doubled downwardly^- through the loop 141 by the needle, forming the' loop 142, through which the shuttle 'thread 143. is then passed, the knot at this Stage beingin the condition shown in Fig.-

37. Then the 10011142 is pulled backwardly through the'l'oop 141, by drawingon the right hand-endof the needle'thread 140,

thread 143 and forming .the loop 144, the loop 142 disappeering'in this process. The knotl is then in the condition shown' in Fig. 8, after which it is onlynecessary to tighten the knot by pulling the two right hand ends of the threads 140. and 143. The mechanisml for .tying thisv knot consists of the needle andthe shuttle.v already described;

' and a' coperating device for ina-king the preliminary loop or hight 141. The instrument which "directly engages. with the thread is the looper, or knetter hook 148,

- Aih aving the forked and barbed prongs 149 and y'150, .which lenge-ge with' 'the needle thread as shown vin Figs. 22' and 23 when needle, whichy passesthrough the loop 141,'v

as shown in Figs. 27 and 28, thus doubling the needle thread downwardly through the loop 141 and forming tlie'loop 142. Having thus formed the preliminary loop 141 and delivered it to the needle 'the hook 148 then sheds that loop by moving forward to the position shown in Fig. 29, the loop being retained by the needle und thereby drawn olf l through theba/rbs of the 'h ook, which -Meanwhile the loo then is drawn back. to the position of Fig.

31, clear of the needle, and is rotatedbackwardly, as shown in Figs.A 31, 33 and 35, to

the preliminary loop for the next knot.

142 is carried downlits original position preparatory to forming Wardly by the nee e as shown in' Figs. 30 and 32, to a .point at which it isengaged by the beak 101 of the shuttie, and carried entirely around beneath that shuttle `and around the cop of threadin the shuttle, as already described, so that the latter is passed through the'loop 142,l which, as it is drawn upwardly by the takeup, 'during the upward stroke of the needle as shown inA Fig. 23, carries with it the lower or shuttle thread to ,the position shown in Fig..37, the continued operation of the take-up operating to draw the shuttle thread upwardly through the loop 141 to the position shown lby a 4uitable relative tension u on the two in Fig. 38, after which the knot is tightened threa s 140 and 143. Durin P' is fed forward at a. regular rate, the needle traveling with the amphlet during the time that itis engage therewith, from t. e time that the knot is being thus forme the pamphlet' the position 'shown in Fig. 28 to that`o Fig.

36. According to the timing hereinf'shown, the .knotter hook 148 engages with the needle thread to. form the preliminary l'oop for each knot before the completion-of the preceding knot, as shown in Fig. 23; and

the niovement of the hook from this position to that of Figs. 24 and-25 is utilized to assist the takeup and tension devices in tighty ening each precedingkn'ot as shown 4in the two latte;` figures.

The .loop "or bight forming instrumenltal'ityis Isupported for rotation onl a swinging carrier onarx'n, and isA rotated by means of an operatingmember mounted to swingupon an artis which is coincident with the axis of swmgof the carrier, thus simplifying the' construction, andy enabling the io's movement of the respective' parts to be,

proper y and readily controlled and correstes. From the preceding description it will be seen tl'fatjthe knetter hook is rotatedand moved transversely to the path of .the needle. In the preferred apparatus herein shown end descrihedthe hook is mounted in the lower end, of the swinging carrier or knetter arm 151, which is pivotally supported upon the shaft or stud 153, fixed in the hub 154 oi Y the cap section 82 of the swinging head 80, the upper end of the cam-being provided 'with a pin or roller 155 working in the cam groove 156 of the cam 157. That cam is mounted to rotate upon the stud 160, which is iixed in the cap section 82 in axial elinev ment with the main shaft 60.. Onaccoun't of the interposition ofl the needle bar S5 and' its cross head 87, the main shaft 60 cannot @o thread at tivo points.

.cam'l by meansl of the bevel'joint`- 211,`

pthe-nut i12/ tightened, 'and be readily' loosened again by the loosening of that nut. 'Theperipheral surface ot the cani 210 or of .thee-inn 9T is preferably graduated, so

' as to enable the cam 211 to be immediately set at desired positions, suitable for the 3 0 diierent lengths of the respective pamphlets. 'lhis .mechanism operates to cut oii' the connecting threads 'between the succeedfv ingv pamphlets to separate them a-iter they are securely stitched, and as they pass from i@ the second feed rolls 'und tothe delivery rolls 176 and 177. This is preterably ydone by severing' each of the two connecting threads at tuo points, quite close to the. end knots of the adjacent pamphlets.

v20' The upper and the lower threads are cut mounted, respectively,

j. by separate devices,

above and bellow the. pamphlet; buty these 'two devices are identical as to mode of operation, andare substantially identical 1n 2 5 construction, excepting that the 'loner thread cutting mechanism is-:mounted-in a .fixed relation to the bed, as shownli Fig.

A'11, while the upper Athread cutting mecha-.

nism is mounted in a 'swinging arm, which M -'enables that mechanism. tto-adjust itselfv toY different thicknessesot pamphlets.- 'lt will therefore be necessary to vdescribe only one of 'these substantially duplicate sets o f mechanisms.

'The devices which operate directly upon .the thread are the picker blade. 215 and the shear y.blades 216'and 217 which coopera-te with the opposite 'edges of the picker blade to forni .two pairs of shears, cutting the Thev picker blade 215 is fixed upon-the picker arm 218, which isrnounted to oscillate upon the stud 219,

lwhich in. the case of4 the loiver shear mechanism is liyed in the hub. 220 .of the bed; 4 5 'and the, upper shear mechanism is secured -in the end of the arrh- 22 1,'Which in 'turn is mounted upon thestud 222, fixed in the bracket Q -The picker arms are oscillatcdby means' of connecting rods' 223, uconnected swith the stud 2251 inthe lower end of the picker cam. arm 225. That arm is pivotally mounted at 250 upon the bracket v 2512, and engages by means of a. cam. pin 'or colla1252 with the caml groove in the 55, cam 255. AThat cani yis mounted concen-v tri'cally With the 'cani shalit 5 5, and is driven intcrmittentlyto operate the shear only at those stitchcswvhich 'unite the succeedingr pan'iphlets, under the' control of clutch and' signal mechanism, which will be .hereinafter described. .j lThe points .226 rif-the picker lblades eX- tend beyond their cooperating shear blades 2l6 and `217,and are curved` in substan- Gn tial Lcoincidence with an. arc struck from in vv'liich position theshear is open. Iorder to hold the shear blades against vtheir thecenters ofthe studs 219-(l3`ig'fs. 14 and 15). The picker blades are inclined at 227 and 228, theA 'latter incline being .I'nuch shorter than the incline 2217, on account of 'the circumstance that the point 226 of.. the -70 'blade is at one side of the center of the Width of the picker blade, in order to allow 'for' the travel of thc pamphletduring the interval 'between the time that the point of the picker passes. under the thread, and the time of .cutting o the thread, it beingrdesirable -to pickup the'thread at substantially the center of its length. Fig. 14 representsA the 'picker and shear in their resting position, vwith the-points 226 of the picker at-one side of the threads 23Q and 231, while Fig. '15 represents -thccutting mechanism at the opposite end of its movement,after the picker "has picked up the thread and the shear blades '216' and 217 have closed upon the 85.

thread and severed it. For cheapness of construction and ease of adjustment and re` ne'wal these shear blades are 'simple pieces of sheet steel, which are clamped inthe blade holders 232 and 238, vand are pivotallyv 'munted upon the studs 2.34, thc' ends of w' iiclrare fixed in the yoke 235, pivotally mounted at 236 upon the picker -arm 218, tliat'.. \fokc being provided with an arm 237 'nim-'king in the cam slot 23S of the cam 239. 95 Which-is clamped upon 'the end of the `stud 219, the cam slot serving to move the yoke and its connected shear blades downwardly to the-'position shownin Fig. 15., in moving thereto fromthe position shown in F ig. 14, In

'coperating edges of the' picker blade with suitable tension,ythecoiledsp'rings 240 are 'mounted upon .the studs, the inner ends of'105 the springs bearing against the'blade holders 232 and 233, while the outer endsl of the springs areheld by the collars' 241, and as a convenient means for adjusting the tension of the `sp'ringsjthese colla-rs are'provided 110 with a series of notches which engage with a cross pin 242 inthe stud 234..' These springs are Wound somewhat longer and compressed lengthwise, thereby serving to hold .the blade `holders longitudinally to 115 I place upon .their respective studs. The blade ho ders 232, 233 are preferably split atl 2117, andv are provided with the clamping screws 248, by means of which the blades may readilyv be' clamped to place after ad- 120 justmcnt, thc'edges of the bl ades being preterably. dove-tailed in their seats in the hold-4 f ers as best shown in Fig. 12. Obviously,"

'this form of blade holder. may be .very

greatlysimplificd, and the number ofparts 1.25-

niuch reduced"by securing- 'the blades directly upon the yoke 235, and utilising the" spring o f the blades to secure proper Working contact vwith vthe picker blade. But, for

certainty, permanence andv ease'or1 action, 130f 

